Improvement in patterns for stove-castings



BERNARD n. MENKnoF'cINoINNATI, oHIo.

Letters Patcnt No. 96,717, dated November 9, 1869.

IMPRovEMENT 1N PATTERNS Iton sTovE-CASTINGS.

The Schedule referred'to in these Letters Patent and making part of the same.

To all whom it may concern i Be it known that I, BERNARD H. MENKE, of the city of- Cincinnati, in the county of Hamilton, and State of Ohio, have invented a certain new and useful Improvement in Pattern for Stove-Castings; and I do hereby declare that the following is a full, clear, and exact description of the construction and opera- .tion of the same, reference being had to the annexed drawings, making part of this specification,- in which the object of my improvement is -to provide means whereby the dovetail on the bottoms of stoves, for holding the feet, may be east straight.

Heretoforc the dovetail has been moulded by means of two strips of wood, called duff's, whicbleft the inipress of the two sides of the dovetail in the sand, and were afterward separately .removed therefrom, and, by reason of these piecesnot being permanently atcached to each other, th'ey were often shifted. so as to be out of their proper relation to each other, by the packing of thesand, the result of which was, that a large percentage of the castings for the bottoms of stoves required agreat amount of labor, in order to produce an accurate fit of the dovetail for the stovefoot. And the reason of their ndt being'joincd together permanently was, that they could not be so re- 'moved from the sand without interfering with it, and thus spoiling the mould;

My means for the accomplishment of the above' A is a projection, of a length and width not less than that of the seat of' the dovetail B, and placed in the relation to the said seat, shown in the drawing, fig. l. This projection on the pattern will cause a. similar recess in the cope when the mould is formed.

The dovetail,fig. 2, will, ofcourse, be placed in the proper position in the seat B on the pattern before,V

forming the'mould, and when the mould is vformed,

owing to the shape of the dovetail, it will adhere to tbe cope, when it (the cope) is raised from the drag, and may then be drawn, parallel to the plane of the mould, in the directioifof the recess' formed in the cope, by the projection A, until it is wholly removed from the sand.

Thus, by means of the said recess in the cope, and the consequent ability of the moulder to have the dus permanently attached to each other, as shown, all danger" of misplacing the sides of the dovetail may be avoided, as well in the packing'of the sand as in the withdrawal-of the duis.

Fig. 3 shows the application of my improvement to a diii'erent kind of stove, where the depth of theue is s ufiicient to answerthe purpose of the projection A, as shown in fig. 1.

Inthe drawing, lig. 3, A represents a portion of the ue on the bottomof a coal-stove, and which will answer the same purpose in such a-stove that the projection A answers in a wood-stove. The dovetail shown in iig. 4 is adapted to this kind of stove, and is made fast by means of the pins, as shown in fig. 3,.V

Another advantage of my invention is, that it saves much labor to the monlder, as well from the fact that there are only half as many pieces to be used, as from the fact that those pieces are more easily tted in their places.

Having thus described my invention,

What I claim as new, and desire to secure by Letters Patent, is

1. .The stove-bottom with projection A and recess B, in combination with the dovetail piece D, constructed and arranged substantially as described.

2. The -piece D, composed of two duis, permanently attached toeach other, as and for theA purpose described. l f

3. The stove-bottom with projection A', in combi- Vnation with the duiis D, constructed and arranged Witnesses J AMES Moons, S.. SrMoRms.- 

